Emily Wilson, 20, was devastated to discover her boyfriend was cheating on her throughout their month-long holiday to Australia

After confronting the other woman, Emily posted the incriminating messages on Twitter, showing her boyfriend's exchanges with the other woman while they were on holiday for a month last summer.

The messages reveal that on the night before they left for Australia together, her partner slept with the other woman and then messaged her throughout the trip.

Emily revealed her boyfriend's name in the social media posts but does not want him named in the media.

It is thought she discovered his treachery when she saw a message from another woman on his mobile.

Emily tweeted the pictures revealing the betrayal with the caption: “Imagine going on holiday to Australia for a month with your boyfriend of nearly 3 years only to find out the day you get back that he slept with someone else the night before you went and was messaging her on his ‘2nd snapchat’ the whole time you were there lying next to him.”

Emily only discovered her boyfriend has been cheating when she found a message from the woman on his phone

Over text, further messages were sent between the pair.

In one , the cheat says: “Once I’m back we can crack on properly asking as ya don’t ditch me for another lad whilst I’m away.”

Explaining his decision to go on holiday with Emily despite his new love interest he writes: “I’ve still got to go to Australia with my ex, we both know it’s just as mates and my parents know that as well.

“It’s a bit grim if she’s seeing me crack on with you whilst I’m on holiday with her if you get me.

“I don’t wanna go there with her but I have to and if I didn’t I’d have gone with you swear down but I was mates with her before we got together and we’re just mates now and that’s it.”

Emily messaged the other woman to determine what had gone on between her and her boyfriend

Emily also posted exchanges between her and the other girl over Instagram in which she confronts her love rival to get answers.

Emily asks: “I don’t know you but I really need to know what’s been going on with you and my boyfriend.

"I’ve just seen your dm to him so please don’t try and deny it, I just wanna know. I’ve not got anything against you, just need to know.”

The girl replies: “I was going to message you I promise but I’ve been through quite a lot recently and didn’t need more s*** to go through and didn’t want to fall out with anyone because I hate arguments.”